Term
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Definition
Diagnostics
Geniohyoid
Mylohyoid
Stylohyoid
thyrohyiod |
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Term
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Definition
omohyoid
sternohyoid
sternothyroid |
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Term
| Posterior Cricoarytenoids PCA |
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Definition
Large abductor muscle.
originates @ middle depression to posterior surface of cricoid and inserts in the muscular process of the arytenoids.
Innervated by the recurrent laryngeal nerve.
Function: ABDUCT the VF by rotating laterally the vocal process of the arytenoid. |
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Term
| Lateral Cricoarytenoids LCA |
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Definition
Function: direct antagonist to the posterior cricoarytenoid. ADDUCTOR muscle.
Originates from the upper border of the arch of the cricoid cartilage and inserts into the musclular process of the aryteniod on the same side.
Innervated by recurrent laryngeal nerve.
When the LCA contracts, it rotates the muscular process forward and at the same time causes the vocal process of the arytenoid to toe in at midline, enhancing the ADDUCTION |
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Term
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Definition
Originate from the lateral margin and posterior surface of one arytenoid and inserts on the same site on the opposite arytenoid. Not paired-transverse the distance between the 2 arytenoids.
Innervated by the RLN. Function: ADDUCTOR |
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Term
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Definition
Posterior Cricoarytenoid PCA
Lateral Cricoarytenoid LCA
Transverse Arytenoid TA
Oblique Arytenoid OA
Thyroarytenoid TA
Cricoarytenoid CA |
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Term
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Definition
Originates from the muscular process of one arytenoid across to the apex of the opposite cartilage.
Innervated by RLN.
ADDUCTION: bring the VF closer together by approx of the apex of each arytenoid cartilage. |
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Term
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Definition
Form the bulk of the muscular portion of VF.
Originate on the inner surface of the thyroid cartilage, near the thyroid notch and extend posteriorly to the vocal process of the artytenoid. innervated by RLN.
Contraction of vocalis draws crico + thyroid further apart tensing the VFs. Contracting of muscles move the arytenoids forward and Adduct the VFs. |
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Term
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Definition
Controls pitch.
Muscles main up of 2 parts: Pars oblique & pars recta.
Originate from the anterior-lateral arch of the cricoid cartilage and end in 2 different insertions.
The long fibers (oblique) insert near the lower horn of the thyroid, the more superior fibers (recta) course to the lower margin of the lateral thyroid cartilage wall. Innervated by the lower SUPERIOR LARYNGEAL NERVE.
When they contract they increase the distance between the thyroid and arytenoid cartilages. |
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Term
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Definition
Elevator
Origin: Mandible
Insertion: Hyoid Bone |
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Term
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Definition
Elevator
Origin: styloid process
Insertion: hyoid bone |
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Term
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Definition
Elevator
Origin: thyroid cartilage
Insertion: Hyoid bone |
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Term
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Definition
Elevator
Origin: Hyoid bone
Insertion: Mandible |
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Term
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Definition
Elevator
Origin: Mastoid process
Insertion: hyoid bone |
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Term
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Definition
Elevator
Origin: mandible
Insertion: hyoid bone |
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Term
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Definition
Depressor
Origin: superior border of the scapula
Insertion: hyoid bone |
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Term
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Definition
Depressor
Origin: manubrium of sternum
Insertion: hyoid bone |
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Term
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Definition
Depressor
Origin: manubrium of sternum
Insertion: thyroid cartilage |
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Term
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Definition
Origin: Manubrium of the stermun & clavicle
Insertion: Mastoid |
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